Valve



L. JAROS Dec. 10, 1940.

VALVE Filed April 5, 1939 A TTORNEYS.

UNITED STATES PATENT OFFICE VALVE Lawrence Jaros, Chagrin Falls, Ohio, assignor to The W. J. Schoenberger Company, Cleveland, )hio, a corporation Ohio Application April 5, 1939, Serial No. 266,186

' 7 Claims. (Cl. 277-56) My invention relates to valves for gas stoves Figure 8 is a view looking at the outer end of and similar cooking and heating appliances and the hollow insert member; more particularly relates to the single outlet type Figure 9 is a side view of a modified form of of valves having a plurality of flow positions, for hollow insert member;

example, full flow, low and medium flow. Figure 10 is a bottom perspective of the latch 5 Heretofore with this type of valve the volume of and stop member; how in the various reduced fiow positions has Figure 11 is a top plan of the stop and latch generally. been obtained by mean-s of needle member; valves, one being required for each such flow. Figure 12 is an edge view of the stop and latch 10 As this necessitates several adjustments and washer; and 10 greatly complicates the valve structure, the num- Figure 13 is a fragmentary view of the front ber of adjustments being limited only by the plate or panel of a stove with the improved valve number of reduced flow positions, generally installed thereon.

speaking the number of reduced flow positions is Referring more particularly to the drawing, the

limited to one, such valve being known as a valve body or casing i has the inlet extension 2, l5

high-low valve. Furthermore due to the fact adapted for connection with a manifold or other that the individual adjustment for one flow posi suitable sourceoi gas supply not shown. In the tion is entirely independent of the adjustment for particular embodiment of the invention-disclosed the others, it is practically impossible to mainthe extension 2, threads into the gas manifold tain the desired relative rate of or proportional from the bottom. A' rotatable valve plug 3 for 20 flow between the several reduced flows. Also due controlling the how of gas through the casing to the type, design and location of the reduced seats within the tapered bore 5. The valve 3 is flow adjustments heretofore used it has been formed w three inlet p es, a large or full practically impossible to design a modem range flow passage 5, and smaller reduced flow passages with the reduced flow adjustments readily acces- 5 and 7 respectively adapted to be moved into and 25 sible and with the valves easy to assemble to the out of communication with supply passage 8 n modern range manifold, this being true even in extension 2, thus providing three fully open or on the case where only a single reduced flow adjust- Positions and a Closed Off pfl An axial me t means i used, passage or bore 9 in the plug places the transverse The principal object of the present invention Passages 5 and in communication h the is to provide a valve having a plurality of fixed axial Outlet passage 80 in the casing. The reflow positions with a single throttling or adjust duced flow passages t and l lead from depressions ing means for proportionately adjusting the flow recesses 359 a d 34 equal in ze to and-in a in the several reduced fiowpositions. mon plane with the full flow Passa e 5.

35 A further object of the invention is to provide The Valve P 3 is confined Within the va v 35 a valve having a plurality of fixed inlet flow pas- Casing l by means o a p member I a i g a sages of 'difierent flow capacities, and a common central p g it through which the stem l3 of outlet passage,- with a single means for simulthe Valve eXtehdS- Aheavy expansion 0011 Spring taneously and proportionately adjusting th flow It bears at one end against the valve plug and at 40 capacities of said inlet passages. its other end against a washer l5 to resiliently 40 Other objects and advantages of the invention o d e Va ve p u in the bore '4 and the washer will be apparent as the description is considered against he cap as Shown inFigure l of the with the accompanying drawing, in which: drawing. The washer I5 is slidably mounted Figure 1 is a longitudinal sectional view taken upon and guided by the angular stem I3 for rotathrough the improved valve; tion with the valve plug and is formed with radi- 45 Figure 2 is a section on the line 2-2 of Figally and oppositely disposed offset portions or ure 1; ribs l1 adapted for resilient engagement with Figure 3 is a section taken on the line 33 of corresponding radially extending depressions or Figure 1; slots I8 in a combined stop and latch member 50 Figure 4 is a perspective view of the valve plug; so as to latch the valve in its several positions and 50 Figure 5 is a side view of the threaded throttle to indicate to the operator by a clicking sound valve; when movement of the valve from one flow posi- Figure 6 is a view of the inner end of the hollow tion to another has been efiected. These sevinsert member; eral positions of the valve are indicated visually Figure 7 is a side view of same; on the panel 1? in Figure 13. x 55 Thestem I3 is formed with a straight wall or flatiportion 5|, which is slidably engaged by a corresponding straight wall 52 on the washer l5 thus locking the washer against relative rotation. with respect to the valve plug and its stem but leaving the same free to move axially into and out of locking engagement with the depressions or slots I8, in the latch and stop member 50. An arcuate flange 33, extending inwardly from the periphery of the latch and stop member 50, fits snugly into a correspondingly shaped gap or cut out portion in the outer threaded extension 35 of the casing, and is held therein by the cap II when the latter is screwed home on the threaded extension 35, thus anchoring the lock and latch member to the casing. The

member 50 is also formed with two shoulders 53 and 54, respectively formed in opposite edges of the arcuate flange 33, which are engaged by a stop lug 55 on the periphery of washer l5, for positively limiting rotation of the valve plug, the latter being provided with an operating handle 56.

.The outlet end of the casing I has an orifice hood IS in screw threaded engagement with the reduced threaded outlet end portion thereof, the

- hood having a discharge outlet or orifice 20 with which a needle point or valve 2|, fixed to or integrally formed with outlet end of the casing cooperates. A tubular insert member 22 having a press fit in a socket or seat 21 in the inner end of axial plug passage 9, is formed with spaced elongated longitudinally disposed rectangular slots 23 and 24 respectively, opening through the inner peripheral edge of the insert for a purpose presently understood. The low and medium flow restricted inclined inlet passages 5 and 1 respectively, preferably correspond in size with and are spaced apart similarly to and communicate at their inner ends with these slots 23 and 24, which in turn place the inclined passages in communication with .the passage 9, the flow being upwardly and inwardly to and through the slots 23 and 24 and thence outwardly through the cylindrical bore of the member 22' to passage 9 and finally outthrough outlet orifice 20. The extent of this flow is controlled by means of a partially threaded elongated throttle valve 25 mounted in an axial partially threaded bore 25 formed in the valve stem l3 and communieating with the interior of the open ended insert or sleeve 22. The inner unthreaded portion of the bore 26 is of the same size and axially aligned with the bore of the insert, the latter being adapted to snugly receive the smooth cylindrical outer blunt end of the throttle valve when the latter is screwed home in an obvious manner. Inward movement of the valve 25, causes the valve to overlie and of course cut down the .effective area of the narrow slots 23 and 24 in the insert member 22, and movement in an opposite direction progressively uncovers the slots with reverse effect. It will also be seen that when adjustment is made the flow in either flow position of the plug valve is accurately proportional to the flow which occurred in either position before such adjustment was made. Adjustment of the throttle valve is made by engaging the slot in the threaded end thereof with a suitable tool.

When the valve structure is installed on a gas range or the like the hood l8 will be set with respect to the outlet needle valve or point 2| so as to establish an orifice 20 corresponding to the High position oi the valve plug, at which time maximum flow is obtained through supply passage 8, large inlet opening 5 direct to plug mately twice the capacity of passage 5 so that' these respective passages when brought into register with supply passage 8 will accommodate sufllcient gas to support a Low" and Medium burner flame respectively, on all kinds of gases. The operator also generally flnds it necessary, when installing the range, to adjust the throttle valve 25 so as to procure the desired accurate reduced flows, according to the kind and quality of gas being used in the particular locality in which the installation is made, and of course depending upon the nature of the burner being serviced. As previously indicated this fine adjustment is effected by means of'the throttle valve 25. Thereafter, when it becomes necessary to make further adjustments in the reduced flame positions or flows these adjustments can be made simultaneously and without disturbing the predetermined relationship of the Low flow to the Medium flow and .vice versa. This is important because independent adjustment is very likely to result either in too great or too small a flow in one reduced flow position with respect to the other, with the danger that movement of the inlet plug valve to a certain reduced flow position, as indicated on the panel, will not result in the flame characteristics expected and desired for the particular kind of cooking or heating under consideration. While I have shown only two reduced flow positions, it will be obvious that the proportional adjustment means shown herein is adapted for use with a valve having additional reduced flow positions.

It may be noted here that with the handle 55 occupying the position marked Ofi there will be no flow of gas through the valve; but when the handle is turned in a clockwise direction from Off" to High and thence to Low and flnally to Medium in steps of approximately ninety degrees; or in a reverse direction from Medium" to L-ow" and High in the order named, the supply passage 8 will register with the respective inlet orifices in the plug valve and the appropriate volume of gas will flow through the valve. There is a dead area of approximately ninety degrees between the Ofi and Medium flow position direct to Off or from Oil to Medium. Stop shoulders 53 and 54 on the latch and stop member 50, are engaged by the stop lug 55 on washer l5, in the Medium" and .OfP' positions respectively.

From Figures 1, 2 and 3 it will be-seen that except when the valve 3 is closed, there will be In Figure 9 I have shown a modified form of proportional control means wherein the sleeve 22 is provided with two rows 28 and 28 of accurately alined and oppositely disposed perforations 28' and 29' in lieu of the narrow slots 23 and 2|. The perforations 28' which replace the smaller slot 23 are approximately half the area of perforations 29' which replace the larger or medium flow slot 24. The inner ends of inclined passages register with and span the respective rows of perforations. Proportional adjustment is made as in the preferred form of my invention, that is, movement 0! the needle valve 25, causes the latter to progressively cover or uncover the openings, 28' and 29' of each row according to the direction in which the valve is rotated.

It should also be noted that the usual troublesome needle valve means of adjustment, which frequently becomes gummed or clogged, is now entirely eliminated by the use of throttle valve 25.

Having thus described my invention, what I claim is:

1. A valve structure comprising a .casing having an inlet supply passage and an outlet passage, an inlet valve in said casing having a fully open and a plurality of reduced flow positions, said inlet valve having a plurality of inlet passages, one for each of said flow positions and adapted to be brought into and out of communication with said supply passage and outlet passage, a hollow insert member in said inlet valve communicating with said outlet passage, said insert having a' plurality of slots one each for and communicating with the inlet passages for said reduced flow positions and with the interior of said hollow insert, and a throttle valve movable in said insert for proportionately opening and closing said slots to simultaneously and proportionately adjust the flow through two or more of said inlet passages.

2. A valve structure comprising a casing having an inlet supply passage and an outlet passage, an inlet valve in said casing having a fully open and a plurality oi reduced flow positions, said inlet valve having a plurality of inlet passages, one for each of said flow positions and adapted to be brought into and out of communication with said supply passage and outlet passage, a hollow' insert member in said inlet valve communicating with said outlet passage, said insert having a plurality of slots one each for and communicating with the inlet passages for said reduced flow positions and with the interior of said hollow insert, and a throttle valve movable in said insert for proportionately opening and closing said slots to proportionately adjust the flow through two or more of said inlet passages.

3. A valve structure comprising a casing having an inlet passage and an outlet passage, an inlet valve in said casing having a fully open and a plurality of reduced flow positions, said inlet valve having a plurality of inlet passages, one tor each or said flow positions and adapted to be moved into and out of communication with said supply passage and outlet passage, a hollow member mounted in said inlet valve and communicating with said outlet passage, the wall of said hollow member having a plurality of passages therein communicating with the inlet passages for said reduced flow positions and with the interior of I said hollow member, and a valve member cooperating with said hollow member for proportionately opening and closing said passages in said hollow member to proportionately adjust the relative flow through two or more of said last named inlet passages.

4. Avalve structure comprising a casing havsaid outlet passage, the wall of said hollow member having a plurality of passages therein communicating with the inlet passages for said reduced flow positions and with the interior of said hollow member, and a valve member cooperating with said hollow member for approximately proportionately opening and closing said passages in said hollow member to approximately proportionately adjust the relative flow through two or more of said last named inlet passages.

5. A valve structure comprising a casing having an inlet supply passage and an outlet passage, an inlet valve in said casing having a fully open and a plurality of reduced flow positions, said inlet valve having a plurality of inlet passages,

, one for each of said flow positions and adapted to be brought into and out of communication with said supply passage and outlet passage, a hollow insert member insaid inlet valve communicating with said outlet passage, saidinsert having a plurality of rectangular slots one each for and communicating with the inlet passages for said reduced .flow positions and with the interior of said hollow insert, and a throttle valve movable in said insert for proportionately opening and closing said slots to proportionately adjust the ilow through two or more of said inle passages.

6. A valve structure comprising a casing having an inlet supply passage and an outlet passage, an inlet valve in said casing having a fully open and a plurality of reduced flow positions, said inlet valve having a plurality of inlet passages, one for each of said flow positions and adapted to be brought into and out of communication with said supply passage and outlet passage, a hollow insert member in said inlet valve communicating with said outletpassage, said insert having a plurality of slots one each for and communicating with the inlet passages for said reduced flow positions and with the interior of said hollow insert, and a throttle valve movable in said insert for opening and closing said slots to simultaneously adjust the flow through two or more of said inlet passages.

7. A valve structure comprising a casing having an inlet supply passage and an outlet passage, an inlet valve in said casing having a fully open and a plurality of reduced flow positions, said inlet valve having a plurality of inlet passages, one for each ofsaid flow positions and adapted to be brought into and out of communication with said supply passage and outlet passage, a member associated with said inlet valve, said member having a plurality of passages one each for and communicating with the inlet passages for said reduced flow positions and with said outlet passage and a throttle valve for proportionately opening and closing said plurality of passages in said member to simultaneously and proportionately adjust the flow through two or more of said inlet passages.

LAWRENCE JAROS. 

